The VuSystem is a software-intensive video environment developed on operating systems without real-time features. In the course of our work with this system, interesting questions have been brought up about how resources on a workstation can be best divided between applications, and what resource management features (if any) are required. This paper’s main purpose is to outline a rationale for ...

The problem of incorporating advanced hardware resources into a grid computing environment is considered. An experimental special-purpose cluster of machines is designed and placed into service on a prototypical grid. The cluster is populated with CAD workstations, PCs and reconfigurable devices, and then used to develop accelerated implementations for amenable applications. Access mechanisms a...

CAMEX is an expert system designed to plan machining processes for CNC (Computerized Numerical Control) cutting machines. At the present state of development it is constrained to parts for which 2 l/2 D description is sufficient. For this kinds of parts, CAMEX is able to read a drawing of a workpiece from an ordinary CAD file, to understand its 3-dimensional structure and generate a plan workpi...

Recent trends in the integration of process, device and circuit modeling tools and the current rapid emergence of UNIX® based computing environments of networked workstations and compute engines makes possible user-friendly, taskbased CAD systems for technology optimization, characterization and cell design. The paper discusses these trends and identifies opportunities to leverage Technology CA...

Real world engineering design projects require the cooperation of multidisciplinary design teams using sophisticated an powerful engineering tools. The individuals or the individual groups of the multidisciplinary design teams work in parallel and independently withthe different engineering tools which are located onthe different sites for often a long time. In order to ensure the coordination ...

This paper describes our experience with the design of a remote pathologist‘s workstation. We illustrate how our effort to apply direct manipulation principles led us to explore remote direct manipulation designs. The use of computer and communication systems to operate devices remotely introduces new challenges for users and designers. In addition to the usual concerns, the activation delays, ...

The system specification support environment presented in this paper, PROSPEX (Product Specification Expert), supports the RT-SA methodology. It not only provides graphic support for drawing, but also helps the engineer in the analysis and design process itself. PROSPEX analyses the quality and correctness of the RT-SA diagrams using knowledge-based techniques. PROSPEX also includes features fo...

Signal constellation design is a major subtask of constructing an efficient communication system; it essentially entails trading-off error frequency against information throughput, a chief occupation of modem designers. We propose and implement an interactive tool for designing and simulating arbitrary signal constellations. 'To construct the user interface we have utilized Interface Builder, a...

This article is concerned mainly with the software aspects of building reliable and efficient services on a cluster of workstations. A key technology to achieve such a goal is service replication. However, designing and implementing a replication system is a very difficult task. Based on an active replication model, this paper focuses on an objectoriented design pattern to simplify the design a...

Co-located people do things individually while participating in collaboration. It is, however, difficult for designers to foresee what they will do individually and what they will do jointly. Participants therefore need to be able to move any information object between private and public states, but that is cumbersome to do with objects confined to a traditional PC-based workstation. This paper...